Invention Grant
- Patent Title: EL emitting touch switch
- Patent Title (中): EL发射触摸开关
-
Application No.: US12076207Application Date: 2008-03-14
-
Publication No.: US08766924B2Publication Date: 2014-07-01
- Inventor: Kazuto Yamauchi , Yasunori Murayama , Sadahiko Tanaka , Keitaro Takizawa , Kouichi Yamanoue
- Applicant: Kazuto Yamauchi , Yasunori Murayama , Sadahiko Tanaka , Keitaro Takizawa , Kouichi Yamanoue
- Applicant Address: JP Tokyo JP Kanagawa
- Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha,Visteon Japan, Ltd.
- Current Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha,Visteon Japan, Ltd.
- Current Assignee Address: JP Tokyo JP Kanagawa
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2007-242059 20070919
- Main IPC: G06F3/041
- IPC: G06F3/041

Abstract:
An EL emitting touch switch includes first electrodes, a single second electrode facing the first electrodes, and EL layers each sandwiched between a corresponding one of the first electrodes and the second electrode. A light emission driver applies a driving voltage between the first and second electrodes to cause the EL layers to emit light. A timing signal generator generates a timing signal to control the light emission driver such that the application of the driving voltage is stopped at predetermined intervals. Touch decision units are provided for each first electrode. Each touch decision unit includes a feedback circuit for supplying current to the corresponding first electrode such that the potentials of the first and second electrodes become equal to each other, and detects contact of a human body with the corresponding first electrode based on operation of the feedback circuit while the application of the driving voltage is stopped.
Public/Granted literature
- US20090073133A1 El emittting touch switch Public/Granted day:2009-03-19
Information query